Near-sightedness results in far away objects being blurry, far-sightedness and presbyopia result in close objects being blurry, astigmatism causes objects to appear stretched out or blurry. (wikipedia.org)

Near-sightedness is due to the length of the eyeball being too long, far-sightedness the eyeball too short, astigmatism the cornea being the wrong shape, and presbyopia aging of the lens of the eye such that it cannot change shape sufficiently. (wikipedia.org)

There are currently four presbyopia-correcting IOLs approved by the FDA: the AcrySof IQ ReStor (Alcon), the ReZoom (Abbott Medical Optics), the Tecnis (Abbott Medical Optics) and the Crystalens (Bausch & Lomb). (aao.org)

Presbyopia corrections traditionally have been approached with attempts to exchange power, either at the cornea or the lens planes, inducing multifocality, or altering asphericity to impact the optical system. (biomedcentral.com)

Presbyopia is a physiologic inevitability that causes gradual reduction in the amplitude of accommodation affects individuals older than 40 years and is a growing cause of visual disability due to aging demographic of the global population. (biomedcentral.com)

Presbyopia distorts our perception of objects as it causes closer objects to become blurry while objects further away are clearer. (smore.com)

This edition will cast some light on new developments in this field and aims to provide a platform for exchange of innovative ideas and cutting-edge knowledge on the new prospects in treatment of presbyopia. (biomedcentral.com)

Laser Blended Vision is a sophisticated laser eye treatment which is used to treat presbyopia (ageing eyes) (progressive loss of the ability to focus on nearby objects) or other age-related eye conditions. (wikipedia.org)

Just about 50 percent of all Americans with presbyopia are still wearing bifocals, a 220-year old technology invented by Benjamin Franklin," said Dr. McDonald, who was among the first ophthalmologists to perform the wavefront-based laser surgery in the United States. (medindia.net)

According to Marguerite McDonald, MD, FACS, progressive lenses developed using wavefront technology offer significant improvements over standard lenses for treating presbyopia, also known as "Over-40 Near-Blur Syndrome. (medindia.net)